Added appveyor.yml

Author: nblumhardt

appveyor.yml

@@ -0,0 +1,11 @@
+version: '{build}'
+build_script:
+- ps: ./Build.ps1 -majorMinor "1.5" -patch "$env:APPVEYOR_BUILD_VERSION" -customLogger "C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+artifacts:
+- path: Serilog.*.nupkg
+deploy:
+- provider: NuGet
+  api_key:
+    secure: nvZ/z+pMS91b3kG4DgfES5AcmwwGoBYQxr9kp4XiJHj25SAlgdIxFx++1N0lFH2x
+  on:
+    branch: master